Apparatus for removing at least one acidic component from a gas

Details Apparatus for removing at least one acidic component from a gas Apparatus for removing at least one acidic component from a gas

1986-02-11

1988-01-12

Schor, Kenneth M.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Responsive to liquid level

422168, 422169, 422170, G05D 900, B01D 5000

Patent

active

047190884

ABSTRACT:
Apparatus for removing an acidic component from a gas comprising two absorption columns for washing a crude gas by using two concentrations of alkali-containing aqueous solutions. The alkali-containing solution used in the first step has a pH of 6-13 and the solution used in the second step has a 0.3-2.5 N concentration. A specific gravity control device is used to control the concentration of the solution circulated for the second step. A pH control device is used to control the pH of the solution circulated for the first step. The pH control device controls a valve which regulates the addition of the second step solution into the tank of the first step solution as needed.

REFERENCES:
patent: 1156022 (1915-09-01), Riis
patent: 1264512 (1918-04-01), Hechenbleikner
patent: 2191467 (1940-07-01), Haywood
patent: 2822248 (1958-02-01), Harmony
patent: 3907523 (1975-09-01), Melin Jr.
patent: 4096586 (1978-06-01), Badertscher
patent: 4195062 (1980-03-01), Martin et al.

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